Dell Precision M6600 which doesn't really move from my desk and is perfect with it's 17" and AMD FirePro graphics.
Have a current generation Core i7 Dell XPS 12 for when on the move.
Both Dells do exactly what they are meant to and never let me down. Added a mSATA SSD to the M6600 last year and that has really helped it fly. I sort of feel we've got to the point where except for gaming, any laptop from the last few years is pretty much going to be able to keep up with Office, browsing, some video/photo editing etc. Previously I'd be itching for a new machine after about a year, now I'm thinking about extending my Precision's warranty from 3 to 5 years as I don't see the need to replace it.